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config.go
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config.go
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// Copyright 2018 The tiglabs raft Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package wal
import "github.com/tiglabs/raft/util"
const (
DefaultFileCacheCapacity = 2
DefaultFileSize = 32 * util.MB
DefaultSync = false
)
// Config wal config
type Config struct {
// FileCacheCapacity 缓存多少个打开的日志文件(包括index等)
FileCacheCapacity int
// FileSize 日志文件的大小
FileSize int
Sync bool
// TruncateFirstDummy 初始化时添加一条日志然后截断
TruncateFirstDummy bool
}
func (c *Config) GetFileCacheCapacity() int {
if c == nil || c.FileCacheCapacity <= 0 {
return DefaultFileCacheCapacity
}
return c.FileCacheCapacity
}
func (c *Config) GetFileSize() int {
if c == nil || c.FileSize <= 0 {
return DefaultFileSize
}
return c.FileSize
}
func (c *Config) GetSync() bool {
if c == nil {
return DefaultSync
}
return c.Sync
}
func (c *Config) GetTruncateFirstDummy() bool {
if c == nil {
return false
}
return c.TruncateFirstDummy
}
func (c *Config) dup() *Config {
if c != nil {
dc := *c
return &dc
} else {
return nil
}
}